Authorities have revealed how a family of three was killed at their home in the eastern part of the state last week. Stay informed about Massachusetts news, weather, breaking news and investigations! Follow WWLP on our website and social channels: https://www.wwlp.com/ https://www.youtube.com/user/wwlp https://www.facebook.com/WWLP22News https://twitter.com/WWLP22News https://www.instagram.com/wwlp22news/